Hose coupling connection



Jan. 26, 1965 D. J. MARSHALL 3,167,331

HOSE COUPLING CONNECTION Filed June 1. 1962 FIG 27 22 20 23 3 /3 34- I;0 4g 29 93 A? I M FIG-3. H 5 1 1/ 7? i mvau'rom DON J. MARSHALL ATTYS.

United States Patent Ofiice 3,167,331 Patented Jan. 26, 1965 3,167,331HOSE COUPLING CONNECTION D on J. Marshall, Edgewater, Ma, assignor toDixon 'Valve & Coupling Company, Philadelphia, Pa., a corporation ofPennsylvania Filed June 1, 1962, Ser. No. 199,304

9 Claims. (Cl. 285-27) This invention relates to a hose couplingconnection and has for an object the provision of a hose-to-nippleconnection, as for a coupling, which will provide a very secureattachment for the hose; which will not cut or damage the hose; whichcan be very quickly and easily ;means for dividing the action between aplurality of axially spaced gripping rings. The invention also includesimproved means for locking the parts of the connection together.

The objects of the invention as well as various features of novelty andadvantages will be apparent from the following description of anexemplary embodiment of the invention, reference being made to theaccompanying drawings, wherein:

FIG. 1 is a side elevation and section of a coupling connectionembodying theinvention, a hose being shown in final connected position;

. FIG. 2 is a similar section made; I

FIG. 3.118 asection like the upper part of FIG. 1 but showing .apre-finaI position of parts with a locking ring being, inserted; 7

FIG. 4 isa side elevation of a locking ring;

FIG.-5 is an elevation of a portion of one of the rolling' gripper ringsshown in FIG. 1.

V I As shown in the drawings, a hose is connected to a nipple 11 -vvhichis provided with some means, threads 12 being shown, for securing itinsome assembly; The usual assembly isa hose coupling with-a similarmating hose connection and means for securing the coupling partstogether; but the invention is fully disclosed by showing one partof thecoupling, so it is not necessary to show the other one or the means-forsecuring them together.

, The nipple is provided with an annular external rib 13 having a radialsurface 14 which is adapted to be engagedby ,the end of the hose. Thenipple is also provided with a shallow and rather long annular recess 15on the outer side near the end into which the hose material can besqueezed for sealing without damage to the inner linbefore theconnection is ,ing when connected. The end of the nipple is rounded, .asindicated at 16, to avoid cutting the hose.

to by the numeral 21 will be designated as the secondary gripper orsealing grip ring.

"Each annulus or grip ring 20, or 211, is stretchable and compressiblecircumferentially so as to assume various lannulusgdi'ameters, in thepresent case this character being imparted by an annular spring wirecoil 22 which is connected together at its ends. On this spring Wireannulus there are threaded a plurality of generally cylindrical rollers23 of any suitably rigid material, one example being aluminum, withalternating disks 24 of elastomeric material, such as rubber, neoprene,or the like.

A sleeve or collar 27 has the annulus or annuli grip rings 20, 21inserted and the collar is pushed on the hose before the hose is pushedon the nipple. The sleeve 27 is provided with an annular tapered orfrusto-conical surface 28 which functions to wedge the annular griprings 20, 21 down on the hose with a rolling action. An annular radialsurface 29 on an inwardly extending rib on the sleeve limits themovement of the grip ring within the sleeve in one directionand assuresthat it is located in a proper initial position.

. An annular index and hose enclosing band 30 is provided on a seat 31on the rib 13 of the nipple, and is secured thereon, for example, as bybeing punch-staked at various points around its circumference. Holes 32are provided in the sleeve around its circumference for drainage.

There is sufficient space between the inner surfaces of the sleeve 27and the hose 10 for the band 30 to enter the sleeve when the parts aresecured together.

There is enough space inside the end surface 33 for a snap lock ring 34to be inserted, the surface 33 being tapered for easy insertion of thering after the parts have been assembled. Initially this lock ring,which is .springy, is spread apart axially at its ends. The ring 34 fitsin a groove 35 in the sleeve and can enter this groove when the sleeveis fully pulled up on the nipple, asshown in FIG. 3. One edge of thering will engage an annular radial surface 36 on the rib 13 if the partslater begin to move apart axially. An annular shoulder at the inner edgeof the radial surface 36 prevents the ring from moving back radiallyinwardly after being installed. Annular radial surfaces 37 and 38 on thenipple 27 and sleeve 10 respectively interengage (FIG. 3) when the partsare fully drawn together to stop further movement. In the final positionwith the locking ring seated (FIG. 1)-the surfaces 37 and 38 are spacedslightly apart.

Holes 39 are provided in the sleeve above the locking ring groove 35 forthe insertion of a tool to push the lock,- ing ring inwardly forreleasing it when making adisassembly. Since the ring is axiallyresilient it Will spring out when pushed in.

In making the assembly the parts are pre-assembled as described, thenthe sleeve is pulled up onthe nipple and hose. For large sizes aWheel-puller type tool can be used. .Since the roller bands are tight onthehose they will remain in position until the tapered surface 28 of thesleeve engages them and rolls them down in wedging position on the hose.Due to the selected difference in annulus section diameters the bandswill be spaced apart axially in final position. 7

Due to the rigid tapered backing surface of the sleeve the roller bandswill at all times penetrate evenly into the hose around itscircumference. When the connectionhas been made, any pull on the hosewill make the roller bands penetrate more deeply and hold more securely.

The roller grip rings penetrate the hose evenly and prevent cuttingthrough the hose liner tube and creating a potential leak. The annulargroove 15 is cut'in the nipple .or a' tapered nipple may be used, ineither case the purpose being toielieve the "radially inward'pressure onthe nose at 'the'secondarygrip'ring. This creates ajsituati'on where theprimary grip ring acts to hold the hose and thesecondary gripring actsmainly for sealing. jTheouter end 40 of the sleeve is spaced away fromthe hose and rounded so that no breakage-starting cutrin the hose canbegin here.

The relative form and efficiency and permanency of the coupling. Thesurface 29 against which the larger ring engages is spaced the cor-l.rect distance 7 from ,:the end of; the sleeve, which is positi'on'ed atthe end of the gage band 30, toassurethat when position of parts, bothin initial a position and in final position,- have great importance inthe the parts are fully drawn up," as shown in FIG. 1,.-the

smaller ring will be disposed above thexsrnaller-diameter portion orgroove 15 of the nipple toperform'the sealing larger ring will bepositioned above the larger diameter portion of the nipplev to perform.its gripping actionat a point nearer the endof the hose. than'the pointengaged I action without undulyjcuttingjintothe hose'and' that the inwhich said nipple has an annular rib beyond the end of the hose,iiiii/liih said sieevegnas an. interior annrnar groove disposed axiallyinwardly beyond the nipple rib in final assembly, and in which saidmeans for holding the nipple and sleeve together' compris'es'a splitlocking ring which is'resilient circumferentially and axially and whichin its free position has its ends spaced apart circumferem an annularsleeve embracing said nipple, hose and gripby the .smaller'rin'g.The'annulus diametersrof the rings are so proportioned that" thelarger'ring .will be engaged first by the tapered surface of the sleeveand rolledaway from the smaller ring as the parts are tightened so asntoleave the rings spaced apartin final assembly, as shown-in FIG. 1. At'notime during the drawing together of the parts is either :ring engaged bya radial surface which.

would hinder the free rolling action of the cylindrical segments of therings, By-havingfcylindri'cal segments the}.

gripping action onthe hose isspread extensively around per rings, saidsleeve having a frusto conical tapered sur face engageable with:saidyg'ripper ringsto roll them along on; the hose and squeeze fit uponthe nipple, -the taper of ,Sald: corneal surfaceof saidsleeve being suchwith rent,

I tiontoth'e annulus diameters; of said. gripper rings as to .7 causethe ringsitobe spaced apart axially in final rassem bly, and means forholdingthe sleev and' nipple-together against separation in "finala'ssembly position. v

i 6. A-hose coilplingconnection as set forthfin claim 5,

the. circumference instead .iof=-being' concentrated at' spiacedpointsaround the circumference, as would bethe case with spherical segmentelements heretofore used. It is thus seen that the invention providesjasimple, effective and convenient hose coupling connection which can beeasily installed or' removed. The connection is very secure andincreases in effectiveness as pull on; the

hose is increased yet with minimum tendency to damage 7 the hose. Whileone embodiment of the invention has been described 'for' purposes ofillustration, it is 'tobe understood that there may be variousembodiments 'and modifications within theogeneral scope of theinvention,

-I claim':j v p 1. A hose-coupling connection, comprising in combinestion, a nipple 'on which the endportion of a hose istelej-Q scoped inassembly, said nipple having a "radial surface engageable 'by the-end--.surface of the hose,-.an1 annular eircumferentially resilient gripperring surrounding-the hose on said nipple, a p'lura'lity ofsegmentaliigenerally. cylindrical rigid roller elementsiequally spacedaround. said ring 'circumferentially resilient spacer elementsdisposedbetweensaid segmental roller elements, an annular sleeveembracing said'nipple, hose and gripper ring, said -sleeve having afrusto-c'onical tapered surface 'engageable with, the segmental roller'elements Y of said gripper ring to'roll'them along'on the hose: andsqueeze it'upon. the (nipple, and means for'holding the sleeve'andnipple 'together'against axial separation in final assembly position.

21A hose coupling connection as set'forth'in claim .1,

'ing annular rib havinga radial surface at the larger end 7 ,7 turna'blymounted on sai "core,

spacers between said 'roller'segmerits;

in which said'ni'pple is provided ivith a portion ofreduced idiameternear itsend, a gripping ring: of smaller-diameter being"positioned" above said portion of smalle'rijdiameterin'final{assembly-positionfto seal the'hos'e on the nipple, and agripping ring'of' larger diameter being positioned above "a-l'argerdiameter portion ,of the 'nipplefto 'grip the hose. on the nipple atajpdin't nearer, the end of the *hose -than these'aling poiiit atfsaidportion of reduced diameter; p 1 v 71 Ih hOSe coupling connection as setforth 'ini'ela'imfi, in wh ch..each;gripper ring comprises an "innercircumferentrally -16Sllll'lt supporting core, a plurality of ."cir1cumferentially spaced. rigid cylindrical roller ;isegments ytur-nablyrn'ounted oirsaifd core, an'a resilient' washer t ype Pacers betweensaid roller segments.

in whieh each gripper comprises inner "circumferentially resilientsupporting core, ,a plurality of circumferentiallyfspaced -rigidcylindrical roller segments resilient washeptype :9. hose couplingConn/mien; comprising in bombinati'on, a nipple omwhich' the "endportion of a hose is telescoped' in'fass'embl-y', san nipple having anoutwardly extending annular rib with 'a 'r'a'dial surface engageable by"-the end surface ofthe hose, -sa'id nipple also' havingfan aXialIy'eIOnga ted annular groove near "its "outerfiend, a plurality of jannular circu'rnfe rentia'lly' "resilient gripper r ngs I-surrounding:the hose; e said nipple, isaid :"gripper rings being of decreasingannulus diameter from the inner endgof 'the hose' outward,- each saidgripper ring 'cofnpris ing a circumferentiall-y i extensible .core', 1aplurality ;sor

I in which said sleeve is providedwithan inwardly extend- -of thetapered surface enga'geable" with-said gripper ring 7 if in initialassembly'posit'ion but 'movableaxially away from sembly. I r

3. A hose eouplinglconnectionas'gset forth in cla'irn Z; which. furtherincludes'an indexbandgon said nipple stir-- rou'nding-the end ofthe hoseand telescopic inside'th'e rib "6 5' said gripper ring as the parts aredrawn up in tightened as-" 'circumferentially spacedf cylindrical rollersegments turnablyT-mounted on ssaid corefland 1 resilient "elasticwasher-type spacers between --j-s ia=-m11 er "segments, an annularsleeve embracing said nipple, ihose and gripper' rings, said .;sleevehaving a frusto-c'oiiical tapered interior surface engageab le wit-hsaid.-gripper rings "to roll them 7 alongl o n' 'the-hose'andsgueezef'it"upon the nipplefthe V taper of I said conical -surface' j of; 1 thesleeve beiiig 'such .*with respect to :the'annulus diameters? ofthe'gr'ipper rings of the sleeveforindicating the end'position of thesleeve' j in initial assembly position of parts to obtain propiendispositionand maximum holding. efiiciency of the conned- -tion in thefinal tightenedpositions" 4. -A hose-coupling connection as set forth-inclaim 75 assembly-, the sleeve having a-n interior annular rib with 'aradialsrirface toip'osition said-" bs' in initialassembly pos t on,1ndex;means to locate said "sleeve injproper' POSItIOH 1n-"initia1assembly, a gripper fr'in'g of smaller annulus .diameterbeing located Iover 1 the groove of the nipple rmxfinal assembly to form 1a seal, and'a gripper ring of larger diameter being located over a larger diameterportion of the nipple nearer the end of the hose to grip it morestrongly than the smaller diameter gripper ring, and means for holdingthe sleeve and nipple together against axial separation in finalassembly position.

Referemes fited in the file of this patent UNITED STATES PATENTS 6Muller July 20, 1948 Ellis May 3, 1960 Samiran Nov. 14, 1961 FOREIGNPATENTS Austria Apr. 25, 1949 France July 6, 1959 Germany Jan. 14, 1939Germany Aug. 6, 1959 Germany Oct. 29, 1959 Germany Nov. 3, 1960 GreatBritain Aug. 18, 1954

1. A HOSE COUPLING CONNECTION, COMPRISING IN COMBINATION, A NIPPLE ONWHICH THE END PORTION OF A HOSE IS TELESCOPED IN ASSEMBLY, SAID NIPPLEHAVING A RADIAL SURFACE ENGAGEABLE BY THE END SURFACE OF THE HOSE, ANANNULAR CIRCUMFERENTIALLY RESILIENT GRIPPER RING SURROUNDING THE HOSE ONSAID NIPPLE, A PLURALITY OF SEGMENTAL GENERALLY CYLINDRICAL RIGID ROLLERELEMENTS EQUALLY SPACED AROUND SAID RING, CIRCUMFERENTIALLY RESILIENTSPACER ELEMENTS DISPOSED BETWEEN SAID SEGMENTAL ROLLER ELEMENTS, ANANNULAR SLEEVE EMBRACING SAID NIPPLE, HOSE AND GRIPPER RING, SAID SLEEVEHAVING A FRUSTO-CONICAL TAPERED SURFACE ENGAGEABLE WITH THE SEGMENTALROLLER ELEMENTS ON SAID GRIPPER RING TO ROLL THEM ALONG ON THE HOSE ANDSQUEEZE IT UPON THE NIPPLE, AND MEANS FOR HOLDING THE SLEEVE AND NIPPLETOGETHER AGAINST AXIAL SEPARATION IN FINAL ASSEMBLY POSITION.